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What Is the Electron Configuration for Potassium (Atomic Number 19)

Question 68

Multiple Choice

What is the electron configuration for potassium (atomic number 19) ?

A) 1s²2s²2p⁶3s²3p⁷
B) 1s²2s²2p⁶3s²3p⁵3d²
C) 1s²2s²2p⁸3s²3p⁵
D) 1s2²s²2p⁶3s²3p⁶4s¹
E) 1s²2s²2p⁶3s²3p⁵4s¹

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